Volume Table of Raintree (Samanea Saman) in Bangladesh by Regression Technique

• 作者: Abdul Kadar Muhammad Masum Jonaed Kabir S. S. Islam
• 来源期刊: 统计学期刊(英文)
• 学科: 医学
• 关键词: VOLUME TABLE Raintree Regression TECHNIQUE Profitable
• 年，卷（期）: 2012,（1）
• 页码范围: 115-119
• 页数: 5页
• 分类号: R73

摘要

Raintree (Samanea saman) is a multipurpose village tree species grown in abundance at southern and northern regions of Bangladesh. Village people need to know estimation procedure for timber inventory of this useful tree species. Data on diameter at breast height (diameter) and total height (height) of 205 standing sample trees were collected by Spiegel relascope for the purpose. The sample trees with diameter ranging 21 cm - 91 cm and height ranging 10 m - 20 m were considered for measurement. Volumes (m3) of individual trees were computed by Smalian formula. A total of 10 linear models of volume on diameter and volume (V) on diameter (D) and height (H) were examined with the sample trees. A few statistics of F, t, mean square error, multiple correlation coefficient and Furnivall Index was computed and tested for investigation of best fitted models. The two models of In(V) = 8.3023 + 2.1746 In(D) and In(V) = –9.1864 + 1.85502 In(D) + 0.8234 In(H) were found to be best fitted models. They have been recommended to estimate volume of large scale standing Raintree trees.